Participants receiving MAPS will receive the Safety Planning Intervention (SPI) which will be uploaded into the smartphone app. They will be prompted four times per day to complete a brief ecological momentary assessment "check-in" inquiring about their cognitions, affect, and behavior, including suicidal thoughts and behaviors. Based on these responses, they will be provided with coping strategies from their safety plans and from a database of coping strategies created by study staff. They will also have access to emergency phone numbers, the coping strategies database, and can communicate with their study clinician through a text-like interface in the app. They will receive this intervention for one month.

Participants in this condition will receive the Safety Planning Intervention (SPI) and will receive ecological momentary assessment prompts on the same schedule as the MAPS condition. However, they will not have access to any other MAPS features.

Safety Planning Intervention, ecological momentary intervention smartphone app system, and bidirectional communication with study clinician.

Measured using the Client Satisfaction Questionnaire, a self-report measure of satisfaction with treatment. Scores range from 8 to 32, with higher scores representing higher satisfaction.

Measured by recruitment rate.

Measured by dropout rate.

Feedback on qualitative interview.

Feedback on qualitative interview.

Measured by protocol completion rate.

Number of assessments completed out of total

Will be assessed using the Columbia Suicide Severity Rating Scale, items from the Modified Scale for Suicidal Ideation, and ecological momentary assessment of suicidal ideation and behavior. The Columbia Suicide Severity Rating Scale can provide presence/absence of suicidal ideation and suicidal behavior, as well as a suicidal ideation score ranging from 0 to 5 with higher scores representing more severe ideation, and a suicidal ideation intensity rating from 0-25 with higher scores representing more intense ideation.

Coping strategy use will be measured in three ways: (1) when participants are prompted to use a coping strategy via MAPS, followup prompts ask whether or not they used the coping skill, (2) in each EMA survey, participants are asked whether or not they used any coping skills since the last survey, and (3) the system provides output with regard to how many times participants dial a support contact phone number through the MAPS app.